"The festival of Artemis Stymphalia at Stymphalos was carelessly celebrated, and its established ritual in great part transgressed. Now a log fell into the mouth of the chasm into which the river descends, and so prevented the water from draining away, and (so it is said) the plain became a lake for a distance of four hundred stades. They also say that a hunter chased a deer, which fled and plunged into the marsh, followed by the hunter, who, in the excitement of the hunt, swam after the deer. So the chasm swallowed up both the deer and her pursuer. They are said to have been followed by the water of the river, so that by the next day the whole of the water was dried up that flooded the Stymphalian plain. Hereafter they put greater zeal into the festival in honor of Artemis."
January 1, 1970
https://en.wikiquote.org/wiki/Artemis